This possible supernova was discovered by the 0.6 m schmidt telescope at Xinglong Observatory during the Tsinghua-NAOC Transient Survey (TNTS). The transient is located 1" east and 0" north of the center of SDSS J015830.25+125528.1

A spectrum taken with the Lijiang 2.4-m telescope indicates that this transient discovered during the Tsinghua-NAOC Transient Survey is a subluminous, 91bg-like type Ia supernova at a relatively young phase.